CVE-2023-39191
Kernel: ebpf: insufficient stack type checks in dynptr
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.
| CWE | CWE-20 |
| Vendor | red hat |
| Product | red hat enterprise linux 9 |
| Published | Oct 4, 2023 |
| Last Updated | Nov 6, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2023:6583 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0381 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0439 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0448 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-39191 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2226783 zerodayinitiative.com: https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/
Credits
Red Hat would like to thank Zero Day Initiative (ZDI) for reporting this issue.